Manga (漫画) are comics created in Japan, or by Japanese creators in the Japanese language, conforming to a style developed in Japan in the late 19th century. They have a long and complex pre-history in earlier Japanese art. In Japan, people of all ages read manga. The medium includes works in a broad range of genres: action-adventure, romance, sports and games, historical drama, comedy, science fiction and fantasy, mystery, suspense, detective, horror, sexuality, and business/commerce, among others.

Since the 1950s, manga has steadily become a major part of the Japanese publishing industry, representing a ¥406 billion market in Japan in 2007 (approximately $3.6 billion) and ¥420 billion ($5.5 billion) in 2009. Manga have also gained a significant worldwide audience. In Europe and the Middle East the market is worth $250 million. In 2008, in the U.S. and Canada, the manga market was valued at $175 million. The markets in France and the United States are about the same size. Manga stories are typically printed in black-and-white, although some full-color manga exist (e.g. Colorful). In Japan, manga are usually serialized in large manga magazines, often containing many stories, each presented in a single episode to be continued in the next issue. If the series is successful, collected chapters may be republished in paperback books called tankōbon. A manga artist (mangaka in Japanese) typically works with a few assistants in a small studio and is associated with a creative editor from a commercial publishing company. If a manga series is popular enough, it may be animated after or even during its run. Sometimes manga are drawn centering on previously existing live-action or animated films.

The term manga (kanji: 漫画; hiragana: まんが; katakana: マンガ; About this sound listen (help·info); English /ˈmɑːŋɡə/ or /ˈmæŋɡə/) is a Japanese word referring both to comics and cartooning. "Manga" as a term used outside Japan refers specifically to comics originally published in Japan.